US2620264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making silver iodide crystals
Assignee: Missouri Automatic Control Corp
•
Filing: 1951-09-14
•
Granted: 1952-12-02
•
Expires: 1971-09-14
Abstract
No abstract record available.
Inventors
- 👤 Robert A Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:49
CPC Classifications
C; C01; C01G; C01G5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS OF PRODUCING SILVER IODIDE CRYSTALS: INCLUDING DISSOLVING SILVER IODIDE IN HYDRIODIC ACID AND ADDING SUFFICIENT VOLUME OF ALCOHOL THERETO TO NEUTRALIZE THE ACID, APPLYING HEAT THERETO TO CAUSE THE LIQUOR TO BUBBLE, AND TO EFFECT THE NEUTRALIZATION AND THE SEPARATION OUT OF CRYSTALS, WHILE HOLDING THE HEATING SUFFICIENTLY LOW TO MINIMIZE THE LOSS OF ALCOHOL, AND THE RESOLUTION OF THE CRYSTALS, THE SAME BEING NOT SUBSTANTIALLY HIGHER THAN THE BOILING POINT OF THE ALCOHOL UNDER THE PRESSURE CONDITIONS OF THE PROCESS.
Claim 2
Dependent Claim
83 words
A PROCESS OF PRODUCING SILVER IODIDE CRYSTALS: INCLUDING DISSOLVING SILVER IODIDE IN HYDRIODIC ACID AND ADDING SUFFICIENT VOLUME OF ALCOHOL THERETO TO NEUTRALIZE THE ACID, APPLYING HEAT THERETO TO CAUSE THE LIQUOR TO BUBBLE, AND TO EFFECT THE NEUTRALIZATION AND THE SEPARATION OUT OF CRYSTALS, WHILE HOLDING THE HEATING SUFFICIENTLY LOW TO MINIMIZE THE LOSS OF ALCOHOL, AND THE RESOLUTION OF THE CRYSTALS, THE SAME BEING NOT SUBSTANTIALLY HIGHER THAN THE BOILING POINT OF THE ALCOHOL UNDER THE PRESSURE CONDITIONS OF THE PROCESS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |